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1 /*
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2 * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.utilities.soql;
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26
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27 import java.util.*;
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28 import sun.jvm.hotspot.oops.*;
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29
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30 /**
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31 This is JavaScript wrapper for Java List.
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32 */
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33
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34 public class JSList extends DefaultScriptObject {
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35 public JSList(List list, JSJavaFactory fac) {
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36 this.list = list;
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37 this.factory = fac;
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38 }
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39
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40 public Object get(String name) {
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41 if (name.equals("length")) {
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42 return new Integer(list.size());
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43 } else {
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44 return super.get(name);
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45 }
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46 }
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47
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48 public Object get(int index) {
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49 if (isInRange(index)) {
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50 Object item = list.get(index);
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51 return wrapObject(item);
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52 } else {
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53 return super.get(index);
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54 }
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55 }
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56
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57 public Object[] getIds() {
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58 Object[] superIds = super.getIds();
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59 final int size = list.size();
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60 Object[] res = new Object[superIds.length + size];
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61 for (int i = 0; i < size; i++) {
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62 res[i] = new Integer(i);
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63 }
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64 System.arraycopy(superIds, 0, res, size, superIds.length);
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65 return res;
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66 }
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67
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68 public boolean has(String name) {
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69 if (name.equals("length")) {
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70 return true;
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71 } else {
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72 return super.has(name);
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73 }
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74 }
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75
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76 public boolean has(int index) {
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77 if (isInRange(index)) {
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78 return true;
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79 } else {
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80 return super.has(index);
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81 }
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82 }
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83
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84 public void put(String name, Object value) {
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85 if (! name.equals("length")) {
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86 super.put(name, value);
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87 }
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88 }
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89
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90 public void put(int index, Object value) {
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91 if (! isInRange(index)) {
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92 super.put(index, value);
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93 }
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94 }
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95
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96 public String toString() {
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97 StringBuffer buf = new StringBuffer();
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98 buf.append('[');
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99 for (Iterator itr = list.iterator(); itr.hasNext();) {
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100 buf.append(wrapObject(itr.next()));
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101 if (itr.hasNext()) {
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102 buf.append(", ");
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103 }
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104 }
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105 buf.append(']');
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106 return buf.toString();
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107 }
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108
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109 //-- Internals only below this point
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110 private boolean isInRange(int index) {
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111 return index >= 0 && index < list.size();
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112 }
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113
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114 private Object wrapObject(Object obj) {
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115 return factory.newJSJavaWrapper(obj);
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116 }
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117
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118 private final List list;
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119 private final JSJavaFactory factory;
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120 }
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